#include<stdio.h>
int main()
{
     int p,e,i,d,j,no=1;
     scanf("%d%d%d%d",&p,&e,&i,&d);
     while(p!=-1&&e!=-1&&i!=-1&&d!=-1){
       for(j=d+1;j<21252;j++)
         if((j-p)%23==0)  break;
       for(;j<21252;j=j+23)
         if((j-e)%28==0)  break;
       for(;j<21252;j=j+23*28)
         if((j-i)%33==0)  break;
       printf("Case %d",no);
       printf(": the next triple peak occurs in %d days.\n",j-d);
       scanf("%d%d%d%d",&p,&e,&i,&d);
       no++;
       }
    // system("pause");
} 
